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HORIZON ENVIRONMENTAL INC. <br /> 5011 Golden Foothill Parkway, Suite 7 Monitoring Well No MW-'l <br /> EI Dorado Hills, California 95762 -- <br /> (916) 939-2170 -- Fax (916) 939-2172 <br /> Drilling Company Qregg Drilling Project No 7076 14 <br /> Date Drilled 7_13103 Site Quik Ston No. 76 <br /> Drilling Method hollow-stem auger Location Stoc ton. CA <br /> Sampling Method 5f fL, oon Geologist Craig Roth <br /> C <br /> CL <br /> (, s <br /> o 8 W = Soil Description/ <br /> E <br /> o L Q " Comments Well <br /> Construction <br /> CL <br /> o <br /> 4 <br /> 31 neat cement <br /> 32 <br /> 33 — ---- — — — — — — — — — — — — <br /> 3 34 <br /> 35 4 SILT(OL) dark gray-green to black, trace very fine sand, trace <br /> 35 4 18 1$ 11 35 black organics, soft, low plasticity, organic odor <br /> 36 <br /> 37 2'diameter <br /> PVC casing <br /> 38 <br /> 2 <br /> 39 SILT (OL) dark <br /> 40 5 1$ 1$ 22 argray-green to black trace very fine sand <br /> 1040 40 trace black organics, soft low plasticity, organic odor <br /> 41 <br /> 42 — — — — — — --- — — — — — — — — <br /> 43 <br /> 14 <br /> 19 44 SILTY SAND (SM) dark gray, very fine sand, medium density <br /> 45 45 21 18 18 32 45 moist no odor <br /> 46 <br /> 47 <br /> 48 <br /> 41 13 <br /> 49 SANDY SILT (ML) light brown, very fine sand, firm, low <br /> 5 50 50 18 18 20 50 plasticity, moist, no odor <br /> 51 <br /> 52 <br /> bentonite <br /> 53 <br /> 10 54 <br /> 12 SANDY SILT (ML) light brown, very fine sand, firm, low <br /> 55 55 16 18 18 17 55plasticity, moist, no odor _ <br /> 56 2"diameter PVC — <br /> 0 020"-slot screen — <br /> 57 <br /> 58 — <br /> #3 sand- <br /> 21 <br /> and 21 59 <br /> 6 50 22 SANDY SILT (ML) light brown, very fine sand firm, low plas- <br /> 33 18 1$ 10 60 ticity moist, no odor <br /> MW-1 Page _2 of-3-- <br />